How to replace multiple newlines in a row with one newline using Ruby

Question

I have a script written in ruby. I need to remove any duplicate newlines (e.g.)

\\n
\\n
\\n

to

\\n

My current

Answer 1

Additionally, also works with

• spaces on blank lines
• n number of back to back blank lines

str.gsub! /\n^\s*\n/, "\n\n"

where,

• \n is of course newline
• \s is space
• denotes 1 or more spaces along when used after \s